| EntityAndTypeSubscriptionController | A combination of EntitySubscriptionController and TypeSubscriptionController frequently used together in UHF. | 
| EntitySubscriptionChangeListener |  | 
| EntitySubscriptionController | Controls subscription for a number of entities. | 
| FixedMessageSource | Message source with fixed schema. | 
| InstrumentMessageSource | InstrumentMessageSource instances are subject to the following policies:
  
      All read methods  (those inherited from  MessageInfo and
           MessageSource, except  close ()) must be mutually
          synchronized by the caller, since it does not make sense to
          read a cursor from concurrent threads. | 
| MessageInfo | Supplies an InstrumentMessage as well as information about
  its source stream and RecordClassDescriptor. | 
| PreparedQuery | Analogous to JDBC's PreparedStatement | 
| StreamSubscriptionController | Controls the set of original streams from which information is being selected. | 
| SubscriptionChangeListener |  | 
| SubscriptionController | Controls various aspects of message feed subscription | 
| SubscriptionInfo | Provides subscription information - subscribed entities and types. | 
| SubscriptionManager | Subscription controller, which provides subscription information - subscribed entities and types. | 
| SymbolAndTypeSubscriptionController |  | 
| SymbolAndTypeSubscriptionControllerAdapter | Adapter for server  cursor implementations of  TickCursor. | 
| SymbolAndTypeSubscriptionControllerClient |  | 
| SymbolSubscriptionController |  | 
| TimeController |  | 
| TypedMessageSource | Message source with indication of current type. | 
| TypeSubscriptionChangeListener |  | 
| TypeSubscriptionController | Controls subscription for specific message types. |